Malicious PDF — malware analysis report

Static analysis result for SHA-256 51095053e127e81b…

MALICIOUS

PDF

54.1 KB Created: 2020-08-09 04:07:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5cb75a5960a2a00a732df73155533c0e SHA-1: 0b3962f442a814b0731ab66d15d33226718a0041 SHA-256: 51095053e127e81b0f56278aedbd6d4f3502836761bbb3059d15decf7e85460e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link that redirects to a malicious URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. Additionally, the PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, many of which are likely part of a link farm designed to manipulate search engine results. The document body, though partially corrupted, contains text suggesting a lure related to 'importance of genetic diversity in plants pdf'. The primary malicious activity observed is the redirection to a known malicious domain.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=importance+of+genetic+diversity+in+plants+pdf In PDF document text
    • http://gesato.drrebeccaaptekersandtonpsychology.com/uploads/1/3/2/7/132710712/8383362.pdfIn PDF document text
    • http://files.kirkreview.com/uploads/1/3/1/4/131409037/7123115.pdfIn PDF document text
    • http://files.paperandpoppies.com/uploads/1/3/0/7/130739879/574d8fea.pdfIn PDF document text
    • http://files.statsworldcollectibles.com/uploads/1/3/1/4/131453917/gosukenuvov_xorot.pdfIn PDF document text
    • http://files.clutterfamilyofwestvirginia.com/uploads/1/3/2/3/132303329/tiboju.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9139/3698/files/xupepidopi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7317/4680/files/zivimaxurajotogakuzu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/2857609843.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1392/3228/files/take_5_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4959/1718/files/peter_murphy_cuts_you_up_lyrics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6778/5884/files/dewub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6033/8586/files/kavibo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1797/7504/files/54592009210.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6645/8266/files/types_of_fishing_lures.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7646/0447/files/61280352368.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9004/3287/files/web_development_proposal.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008ae4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AE4 5576 bytes
SHA-256: 9610c310b337cf88b1736df6ee1b34f3cb7f7ecbdfbed1fa5d410df3ef0dbfea
font_01_sfnt_off00009dd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DD0 14332 bytes
SHA-256: 32ec17c006389118b316f9fc76fe9c525a86cae70d32e3916b4ddc8952a1cee9

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